Threadless hose-coupling.



P. BERG.

THREADLESS HOSE COUPLING.

APPLICATION rum) APR. 1a, 1913 Patented Dec. 9, 1913.

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. PETER BERG, 0F ENDEBLIN, NORTH DAKOTA.

TI-IBEADLESS HOSE-COUPLING.

Specification of Letters Patent.

PatentedDecJ),1913.

Application filed April 18, 1913. Serial No. 762,077.

To all whom it may concern:

Be it known that I, Pn'rnn Bnno, a citizen of the United States ofAmerica, and a resident of llnderlin, in the State of North Dakota, haveinvented a new and useful Improvement in Threadless Hose-Couplings, ofwhich the following is a specification.

This invention relates to those couplings for flexible hose which areconstructed without screw threads, and so as to be tightened or loosenedby a part turn, and consequently more rapidly than screw couplings.

The present invention consists in certain novel combinations of parts,and in an improved threadless hose coupling embodying said combinationsor either of them, as here inafter particularly described and claimed.

The leading objects of this invention are to render such threadless hosecouplings safe against liability to come apart accidentally, and at thesame time to adapt the coupling members to be separated by an endwisepull when unlocked.

Other objects will be set forth in the general description, whichfollows.

A sheet of drawings accompanies this specification, as part thereof.

Figure 1 is an elevation of the improved thrcadless hose couplingattached to adjoining hose sections and locked; Fig. 2 is an end view ofthe coupling proper projected from Fig. 1; Fig. 3 represents alongitudinal section on the line AB, Fig. 1; Fig. 4 represents a crosssection on the line (1+1), Fig. 1; Fig. 5 represents a cross sectionthrough the unlocked coupling; and Figs. 6 and 7 are respectively anelevation and a longitudinal section of the respective members,uncoupled.

Like reference characters refer to like parts in all the figures.

. The spigot member 1 and the socket memher 2 of the improved threadlesshose coupling have in common an attaching end, a, which is preferablyand conveniently a sleeve end, and a shouldered bore, I); the latteraccommodating an expanded internal metallic ring, 0, by which thecorresponding hose end, (Z, is insepa "ably attached to the couplingmember. Apart from said internal ring 0, or its equivalent, the spigotmember 1 may be a single casting of a suitable metal or alloy. Themetallic socket member 2 carries a rotatable locking ring, 3, providedwith a folding wrench or key lever 4t and its pivot 5; and the body ofthe socket member may be composed of a plurality of parts united in acustomary way. The extremity 6 of the spigot member 1 makes a tightjoint with a gasket 0 supported by a matching shoulder 6 within thesocket member 2; and the periphery of the spigot end, f, Fig. (3, isprovided with a plurality of short spiral projections 7 having reducedportions 8, Fig. (5, adjoining its main shoulder 9, and lockingshoulders 10, Fig. (3, inclined with reference to said main shoulder.The extremity 9 of the socket member 2 contacts with said main shoulder9 of the spigot member 1 in the locked couplings, Figs. 1-4, or with aninter posed gasket, in a customary way. The wall of its main socket fmatching said spigot end f is provided with spiral recesses 7 matchingsaid spiral projections 7. Interspaces 11 between internal lockingprojections 12 011 the ring 3 coincide with said rccesses 7 when thecoupling is unlocked and the spigot member is withdrawn, as shown inFigs. 5 and 7; and said locking projections 12 have inclines 10,matching the inclined shoulders 10 of said projections 7 when themembers 1 and 2 are coupled, and interacting therewith in the tighteningand locking operation.

The locking ring 3 has a circumferential part turn in its recessed seat6', and with reference thereto is provided with said folding lever 4,which is hinged by its said pivot 5 within a recessed externalprojection 13 on the ring, and acconnnodated in its folded position whenthe coupling is locked by a groove 141 and. when the members areunlocked and uncoupled by a groove 15; these grooves being formed in thebody of the socket member as shown in Figs. 1 and 2. The locking ring 3is preferably further provided with a pair of external projections, 16,17, and the body of the socket member 2 with a bridge-shaped stop 18;the latter crossing the rings raceway 3 and contacting with saidprojections 16, 17 when the coupling is locked and when it is unlocked,respectively.

When the spigot f is thrust endwise into the socket f, the interactionof the spiral projections 7'and spiral recesses 7' gives the spigot ashort twist and facilitates holding the coupling members a moment,during which moment the key lever 4: is pulled out of the groove 15 toits position represented in Fig. 5, and the ring 3 is thereby turned inthe direction represented by the arrows a, Fig. 5, so as to cause theinclines of l interacting therewith to tighten and lock the projections12 to interact with the inclined shoulders 10 of the spiral projections7, which tightens the joints at 6, 6 and 9, 9, and locks the coupling.The key lever 4 is then folded into the locked-position groove 14.

In the unlocking and uncoupling operation, the key lever t is lifted outof said groove 14., and the ring 3 is turned thereby in the directionrepresented by the arrows b. This brings the interspaces 11 of the ringinto alinement with the spiral projections 7 as in Fig. 5 and permitsthe spigot member 1 to escape endwise from the socket member 2. Beforereleasing the socket member, the key lever 3 is conveniently folded intosaid groove 15 so as to be out of the way; which also keeps the ring inposition for the next coupling operation. It will be obvious that insome cases the projections 16, 17 and said stop 18 may be omitted orchanged as to form; a ground joint may be substituted for the gasketjoint at 6, 6; and other like modifications will suggest themselves tothose skilled in the art. 1

Having thus described said improvement, I claim as my invention, anddesire to patent under this specification:

1. An improved threadless hose coupling having, in combination, a spigotmember constructed with a circumferential main shoulder, a plurality ofperipheral spiral projections extending toward said shoulder andconstructed with shoulders inclined with reference to said mainshoulder; and a socket member having spiral recesses in its socket wallfitted to said spiral projections, and provided with a rotatable lockingring having internal projections forming inclines matching said inclinedshoulders and interacting therewith to tighten and lock the coupling.

2. An improved threadless hose coupling having, in combination, a spigotmember constructed with a circumferential main shoulder, a plurality ofperipheral spiral projections extending toward said shoulder andconstructed with shoulders inclined with reference to said mainshoulder; and a socket member having spiral recesses in its socket wallfitted to said spiral projections, and provided with a rotatable lockingring having internal projections forming inclines matching said inclinedshoulders and the coupling; said ring being provided with a foldable keylever, and the body of said socket member having a groove to admit saidlever in its folded position when the coupling is locked.

3. An improved threadless hose coupling having, in combination, a spigotmember constructed with a circumferential. main shoulder, a plurality ofperipheral spiral projections extending toward said shoulder andconstructed with shoulders inclined with reference to said mainshoulder; and a socket member having spiral recesses in its socket wallfitted to said spiral projections, and provided with a rotatable lockingring having internal projections forming inclines matching said inclinedshoulders and inter acting therewith to tighten and. lock the coupling;said ring being provided with a foldable key lever, and the body of Saidsocket member having a pair of grooves to admit the folded lever whenthe coupling is locked and when it is unlocked respectively.

4. An improved threadless hose coupling having, in combination, a spigotmember and a socket member, each having a hose attaching end, andprovided respectively with the members of a tight joint at the innerextremity of said spigot member, and with the members of an outer jointat the extremity of said socket member; said spigot member having aplurality of peripheral spiral projections extending toward said outerjoint and constructed with reduced portions and shoulders, the latterinclined with reference to said outer oint; and said soeket'memberhaving spiral recesses in its socket wall fitted to said spiralprojections, and provided with a rotatable locking ring having internallocking projections forming inclines matching said inclined shoulders,and a pair of external stop-engaging projections; the body of saidsocket member being further provided with a stop arranged to contactwith one of said external projections when the coupling is locked andwith the other when the coupling is unlocked, substantially ashereinbefore specified.

PETER BERG.

Vitnesses:

C. E. Bouon'r, FRED UNDERWOOD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. O.

